This book explores the work of criminologist Colin Sumner. It re-presents his arguments and ideas on Marxism, ideology, censure, deviance, crime, underdevelopment, social control and the media; situating them in their wider social context. Moxon argues that Sumner should be restored within the criminology discipline as a pioneer who has produced works of great theoretical sophistication and insight. By systematically considering Sumner’s entire output, the book shows how his thought involved a gradually deepening understanding of his core notion of ideological censure. His writing is also marked by a growing unease with the effects of late modern capitalism and the quagmire of censoriousness rife in the 21^st century. This book makes clear that Sumner’s work was remarkably prescient, and his ideas may help up to make sense of complicated times.